Improper Memory Handling in Secure Encrypted Virtualization Firmware by AMD
CVE-2025-54503

5.9MEDIUM

Key Information:

Vendor

Amd
Status
Amd Epyc™ 9005 Series Processors
Amd Epyc™ Embedded 9005 Series Processors
Vendor
CVE Published:
10 November 2026

What is CVE-2025-54503?

The Secure Encrypted Virtualization (SEV) firmware from AMD is susceptible to an improper handling of overlap among protected memory ranges. This flaw can allow a privileged attacker to exploit misconfigurations in the RMP (Runtime Memory Protection), potentially leading to a significant loss of integrity. Properly mitigating this issue is crucial for maintaining secure virtualized environments, as attackers could manipulate memory settings to execute unauthorized actions.

Affected Version(s)

AMD EPYC™ 9005 Series Processors TurinPI_1.0.0.A

AMD EPYC™ Embedded 9005 Series Processors EmbeddedTurinPI_SP5_1004

References

https://www.amd.com/en/resources/product-security/bulleti...

CVSS V4

Score:
5.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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